An ISSB candidate starts from camp gate, walks 5 km North, then 3 km East, then 2 km more North. What is his shortest straight-line distance from the gate?
Q1. An ISSB candidate starts from camp gate, walks 5 km North, then 3 km East, then 2 km more North. What is his shortest straight-line distance from the gate?
Answer: 7.6 km
Explanation: His final displacement is 7 km North and 3 km East. By Pythagoras, distance equals square root of 49 plus 9, which is about 7.6 km.